GROWTH OF HIGH OPTICAL QUALITY BATIO3 PHOTOREFRACTIVE SINGLE CRYSTALS

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 5693
Amount: $250,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1988
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
27 Congress St, Salem, MA, 01970
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Chandra P Khattak
 (617) 745-0088
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE INTENT OF THE PRESENT PROPOSAL IS TO DEMONSTRATE THAT HIGH OPTICAL QUALITY BATIO3 SINGLE CRYSTALS CAN BE SECURED BY ADAPTING THE HEAT EXCHANGER METHOD (HEM[TM]) OF CRYSTAL GROWTH TO HIGH TEMPERATURE SOLUTION GROWTH. THE PHASE I CRYSTALLIZATIONS WILL BE CONDUCTED FROM A BARIUM BORATE SOLUTION (BAB2O4). BARIUM TITANATE IS KNOWN TO CRYSTALLIZE FROM THIS SOLUTION. THE MINIMUM TEMPERATURE AVAILABLE WITH THIS FLUX IS 942 DEG CENTIGRADE. THE LARGE TEMPERATURE RANGE OF THIS FLUX SYSTEM AND THE EASE WITH WHICH FOREIGN IONS MAY BE INTRODUCED INTO BATIO3 SUCH THAT THE MATERIAL PARAMETERS EFFECTIVE IN PHASE CONJUGATION (PC) AND FOUR WAVE MIXING (FWM) CAN BE STUDIED. THE PROPOSED APPROACH WILL ALLOW PRODUCTION OF MUCH LARGER CRYSTALS WITH THE REQUIRED OPTICAL QUALITY THAN THOSE CURRENTLY AVAILABLE. THE ADAPTATION OF HEM CRYSTAL GROWTH TO HIGH TEMPERATURE SOLUTION GROWTH IS EXPECTED TO PROVIDE THE NECESSARY PROCESS CONTROL FOR THE PRODUCTION OF HIGH OPTICAL QUALITY SINGLE CRYSTALS: AN ABSOLUTE REQUIREMENT FOR PC AND FWM REGARDLESS OF THE MATERIAL'S FUNDAMENTAL CONSTANTS.

* Information listed above is at the time of submission. *

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